JPS6395827A - Non-interrupted source system - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Summary] The present invention solves the problem of power supply during a commercial power outage in a power supply device by providing a battery on the primary side of the device that transforms DC to DC. This makes it possible to obtain multiple output voltages with one battery.

[Industrial application field]

The present invention relates to an uninterruptible power supply device having a battery on the primary side of a power supply device that transforms direct current to direct current.

[Conventional technology]

FIG. 3 shows a block diagram of a conventional power supply device. In FIG. 3, a power supply 1 inputs AC power, rectifies it, and obtains a DC output t-. Here, the DC output due to the AC imm stop titK is l! As a method to prevent l'r, as shown in Figure 3 (11), a battery is used to supply power during a power outage of the transformer power supply for any of the DC outputs shown in Figure 3 (1). In addition to the method of adding 2, the method shown in Figure 3 (2
As shown in 1, there was a method of converting the DC power of the battery 2 into AC power in the event of an external AC power outage, in which case the AC power supplied by the power source 11C would be interrupted using the DC conversion bag C3. .

[Problems solved by the invention]

According to the above-mentioned conventional technology, as a method for interrupting the DC output from the power supply device, according to the method shown in Figure 3 (IIK), it is necessary to prepare and add a battery for each output line, and the third According to the method shown in Figure (2), the DC power output from the battery is converted to AC/DC power, and then converted back to DC power by the power supply, which is inefficient.
This necessitated the use of a highly complex DC-to-AC converter installation.

The present invention solves the problems of the prior art described above and realizes an uninterruptible IRT source with a simple device.

[Means to solve the problem]

FIG. 1 is a block diagram of the principle of the uninterrupted N power supply system of the present invention.

In FIG. 1, the rectifier 14 rectifies the commercial power supply ijr applied from the outside to obtain DC power. The charging circuit 12 charges the batch IJ-11,
The power outage detection unit 1O detects a power outage in the commercial power supply, and switches the switching unit 13
1, selects the DC power output from the rectifier 14 when the current is on, and selects the DC power output from the output IJ-11 during a power outage, and supplies the selected DC power to the transformer 15.

The transformer 15 transforms the direct Mfl power supplied from the switch 13 to obtain 1i output t-, and is, for example, a switching power supply.

In addition, in FIG. 1, the power outage detection unit 10 is connected to the commercial 1! Although the illustration shows that detection is performed by directly inputting the power source, the same purpose can also be achieved by performing detection from a position where the energization state of the commercial power source can be detected, for example, from the output of the rectifier 14. Effect] According to the present invention, the 1! By providing a battery f on the DC power input side of the transformer in the power supply unit, it is possible to obtain multiple DC outputs from a single battery, and the efficiency of 'Ii current-AC gc conversion and rectification can be improved. A method to prevent the decline has been realized.

〔Example〕

FIG. 2 shows a practical example of the present invention.

In the M2 diagram, the same reference numerals as in the 8g1 diagram are the same functional blocks. The transformation EE section 15 connects the given DC power to the primary winding of the transformer and rectifies and smoothes the power generated in the secondary winding to obtain a transformed DC output. Requilator 0 photoelectric circuit 1
2 is book 9! In the example, the output sound of the secondary windings of the transformer 15 is used, but the DC power outputted from the rectifier 14 is used, or the DC power is obtained separately from the AC power Oλ. According to the output of the power failure detection unit 10, the switching unit 13 switches the battery 11 from the charging circuit 1 to the charging circuit 1 when the AC power supply is in the energized state.
2 to put the battery 11 in a charging state, and when the AC power supply is in a power outage state, the battery 11 is connected to the rectifier 14, and DC power is supplied from the battery 11 to the transformer 15, giving a DC output. be.

〔Effect of the invention〕

As explained in detail above, according to the present invention, in an electric @ device equipped with a DC-DC voltage converter, a battery is provided on the primary side of the voltage converter, so that it is possible to , an uninterruptible system that uses electricity more efficiently and can be realized with a simple device, compared to methods in which each DC output line is equipped with a battery, or the AC 'fL source supplied to the power supply device is obtained from the DC power output by the battery. This makes the m-source system possible.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a principle block diagram of an uninvented non-stop TT power supply system. Fig. 2 is an embodiment of the present invention. Fig. 3 is a block diagram of a conventional t-power supply system. . In the drawings, 1 indicates a power supply 2, 11 indicates a battery, and 10 indicates a power outage detection section 12, a charging circuit 13, a switching section 14, a rectification section 15, and a transformation section. . The book is written by Ming O, 4 children; original method JL theory Aro Tsuku illustration 1 Figure 72 Mouth

Claims (1)

[Scope of Claims] In a power supply device that rectifies AC power from a commercial power source to obtain DC power and transforms the DC power to obtain DC output power, the detection means (10) detects the energization state of the commercial power source. ), and a battery () that supplies the DC power in place of the commercial power source during a power outage of the commercial power source in response to the detection means (10).
11), means (12) for charging the battery (11) using the commercial power source, and DC power obtained from the commercial power source and from the battery (11) according to the detection means (10). An uninterruptible power supply characterized in that the uninterruptible power supply is equipped with a switching means (13) for switching between the obtained DC power and the obtained DC power, and transforms the DC power obtained from the battery (11) to obtain DC output power in the event of a commercial power outage. method.